Infants with gastroschisis have decreased intestinal motility. This decrease in intestinal motility delays the introduction and advancement of feeds which prolongs hospitalization. The use of probiotic bacteria may improve intestinal motility. It is unknown whether the intestinal microbiota of infants with gastroschisis differs from that of healthy infants without gastroschisis and whether probiotics will change the microbiota. The primary outcome in this study is the composition of the fecal microbiota in infants with gastroschisis following surgical correction treated with Bifidobacterium infantis or placebo. We will also look at differences in hospital length of stay.